• Steven Rostedt (Red Hat)'s avatar
    ring-buffer: Put back the length if crossed page with add_timestamp · bd1b7cd3
    Steven Rostedt (Red Hat) authored
    Commit fcc742ea "ring-buffer: Add event descriptor to simplify passing
    data" added a descriptor that holds various data instead of passing around
    several variables through parameters. The problem was that one of the
    parameters was modified in a function and the code was designed not to have
    an effect on that modified  parameter. Now that the parameter is a
    descriptor and any modifications to it are non-volatile, the size of the
    data could be unnecessarily expanded.
    
    Remove the extra space added if a timestamp was added and the event went
    across the page.
    
    Cc: stable@vger.kernel.org # 4.3+
    Fixes: fcc742ea "ring-buffer: Add event descriptor to simplify passing data"
    Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
    bd1b7cd3
ring_buffer.c 130 KB